Method of manufacturing paper barrels



11, s. BOLGER.

METHOD 0F MANUFACTURING PAPER BARRELS. APPLcATloN FILED M1119. 1918. RENEwEn ocT. 31. 1919.

1,340, 1 1 O. Paten'ved 11, 1920.

"" 4 S SHEET I.

R. S. BOLGER..

METHOD 0F MANUFACTURING PAPER BARRELS. APPL|cAT|oN lFILED MA1/9.1918: RENEwED ocT.31.1919.

1,340,1 10. Patented May 11, 1920.

.5- 8 11/4 8 -6 11 11 l 11 j) P- A S S1 R. s. BOLGER.

METHOD 0F MANUFACTURING PAPER BARRELS. APPLICATION FILED MAY 9.1918. RENEWED OCT. 3l, I9I9. 1,340, 1 1 O. Patented May 1'1, 1920.

4 SHEETS-SHEET 3.

5] www1/tofu R. S. BOLGER.

METHOD 0F MANUFACTURING PAPER BARHELS.

APPLICATION FILED MAY 9. i918. .RENEWED OCT. 3l, 1919. l 1,340,1 10. Patented May 11, 1920.

. lIIII i? 11. Fiyi D '25 mandrely and subsequently thereto.

t l enligne PATENT oir-rica normar s. 30mm, or NEW YORK, N. Y., AssmNor. or oNnqiALr 'roeaonea r.

wms'rnaa, or BROOKLYN, NEW Yoan. y

Speeioat'ion of Letters Patent. Patented May 11, 1920.'-

p Application led Kay 9, 1918, Serial 11o. 238,461. Renewed Uotober 31, 1919. Serial No. 384.384.

To all whom z't-may concern:-

lBe 'it known that I, ROBERT S. BOLGER, a citizen of the United States, residin at New York cit in the county of New ork and State of ew York, have invented new and useful Im rovements in Methods of Manufacturing 'aper Barrels, of which the following is a specification.

This' invention relates to paper barrels and the object in view is to utilize a method of producing such barrels which consists in dampening or moistening a web of finished paper from which the barrel body is to be formed, stretching a portion or por- 15 tions of said web between the side or longitudinal margins thereof, leaving said margins shorter than the stretched portions of the web, reeling or wrapping the dampened and' stretched web around a bilged form or mandrel, applying an adhesive substance to the web vas it is wrapped upon and around the mandrel, and applying a rolling pressure to the initial and subsequent convolutions of the web as' they are wrapped around rlte e method of producing the barrel also involves certain novel steps in a novel relation to eachother as will hereinafter appear.

With the above and other obJects in view,

the invention consists in the construction,4

combination and arrangement of parts, as

herein described, illustrated and claimed.

' In the accompanying drawings: l

Figure 1 is a diagrammatic elevation l showing the method of manufacturing a invention.

Fig. 2 is a diagrammatic elevation of the stretching rolls. 40 Fig. 3 is a diagrammatic elevation of the adhesive applying rolls.

Fi 4 is a diagrammatic elevation of the man rel and pressure rolls. i l Fig. 5 is a fragmentary plan View of the paper web showing Vstretched and unstretched portions thereof.. ,p

F Fig. 6 is a section on the line 6 6 of i .5. ig. 7 is a section on the line 7 7 of Fig. 5. v y f' ig. 8 is a fragmentary .edge view of a stretched portion of the web. i

Fig. 9 is a cross sectiomthrough the web on the line 9-9 of Fig. 5.

paper barrel in accordance with the present 55 Fig. 10 is a view partly iniI elevation and g partlyin diametrical section of the complete barrel. y

In producing a barrel in accordance with the present invention, a web of paper indicated at 1 and drawn from a supply roll 2 is 69 carried against or between one. or more dampening or moistening rolls 3 preparatory to the stretching of the web. It is then. passed between a pair of stretching rolls 4 which are so designed as tolongitudinally '65 stretch'the web between theside margins thereof, the central or medial portions'or` the web being stretched -to the greatest exe tent and the stretching preferably diminishing toward the side or marginal edges thereof, the latter remaining shorter than'the remaining portions of the web after the stretching operation has been completed. rIhe web, after being dampened or moistened and stretched in the manner referred to, is wrapped around a form ory mandrel 5 of bilged formation and just as the web is being wound upon the mandrel, an adhesive material or substance is applied to the web gy means of an adhesive applying roll 6.

he adhesive material is applied to the web as long as it is being wrapped around the mandrel andvupon itselfto form'superimposed plies or layers. At the same time,a rolling pressure is 'applied to the initial A.and 85 subsequent; convolutions of the web, by means of one or more rollers 7 so that the convolutions ofthe barrel body are caused to adhere and unite firmly and closely.

Simultaneously with the' wrapping of the 90 web around the mandrel andthe Wrapping of the 'convolutions one upon the other, hoop forming relatively narrow strips 8 .are wound around the mandrel and interposed between the convolutions of said web, strip supplying rolls 9 beingprovided for that purpose. Adhesive material is applied to said strips 8 by means of adhesive applying add tothe strength and durability of the barrel and' especially adapt the same for heavy duty purposes.

In Figs. 5 to 9 inclusive of the drawings,

the web 1 is shown as 4having portions thereof' stretched to provide lentlcular offsets 0I' '110 tion.

stretched portions l2 elongated transverselyol' the web and gradually contracting in a stretched portion of such form, it will be understood that the web is stretched to the greatest extent along the longitudinal center of` the web, -,the stretching yoperation progressively reducing toward the side or marginaly edges thereof, sov that when the web is being wrapped around the mandrel, the web will stretch in accordance with the 'bilge of the mandrel and will therefore conform to the form of the mandrel, producing a-barrel body of bilged formation having smooth inner and outer surfaces. The rolling pressure applied to the initial and subsequent convolutions of the web, as it is wrapped around the mandrel, by means of the roller 7 also assists in the operation and insures the formation of a smooth bar rel body, both as to the interior and ex terior thereof.` p

I donot desire to be limited to the par-y ticular form-of offsets or stretched portions, as illustrated in` Figs. to 9 inclusive, it being apparent that the number of stretched portions of the web may be increased or.

diminished according to requirements and the degree of bilge in the mandrel and the thickness of the web of paper used in the formation of the barrel body. I, therefore reserve the right to make such changes in the formation and proportion of such parts as properly fall within the scope and spirit of the appended claims.

l claim f 1; The method of making a paper barrel of a web of dry finished papel', which consists in longitudinally stretching said web between the side edges thereof, the latter remaining relatively shorter than the stretched portions, and then wrapping the same upon itself into bilged barrel forma- 2. The method of making a paper barrel, which consists in dampening a web of dry finished paper, then stretching the portion between the longitudinal edges thereof, the latter remainingY relatively shorter than the stretched portion,` andthen wrapping the web upon itself into bilged barrel formation.

3. The method of making a paper barrel of a web of dry finished paper, which consists in longitudinally"stretching said web between the side edges thereof, the latter remaining relatively A'shorter than the stretched portions, yand then longitudinally wrapping the same in. superimposed con volutions upon itself into bilged barrel formatiomand uniting such convolutions by an adhesive.

4. The method of making a paper barrel of a web of dry finished paper, whichconsists in dampening said web, then stretching said web between the side edges thereof, the latter remaining relatively shorter than the stretched portion, then wrapping the same upon itself into bilged barrel formation, and then subjecting the web and bo'dy to compacting pressure.

5. The method of making a paper barrel which consists in dampening a web of dry finished, paper, then stretching said web between the side edges thereof, thev latter remaining relatively shorter than the stretched portion, then wrapping the same upon itself into bilged barrel formation, and.

interposing reinforcing means between the convolutions thereof during the wrapping operation.

6. The method of making a paper barrel of a web of dry finished paper, which consists in dampenin and longitudinally stretching said web etween the side edges thereof, lthe latter remaining relatively shorter than the stretched portion, then longitudinally wrapping the same in superimposed convolutions upon itself into bilged barrel formation, applying an adhesive to the web to cause the convolutions to adhere to each other, and subjecting the web and the convolutions thereof to pressure during the wrapping operation.

' 7. .The method of` manufacturing bilged barrel bodies of a continuous unbroken web of paper, which consists in longitudinally stretching said web between the side edges thereof, the latter remaining relatively shorter than the stretched portions, then longitudinally wrapping the same upon itself into bilged barrel formation, and in-l terposing relatively narrow strips of flexible material between the convolutions of the web during the wrapping of the web around the mandrel.

8. The method of barrel bodies ofy a continuous unbroken web of paper, which'consists -in longitudinally -mandreL and applying' an adhesive sub- 'manufacturing bilged i stance to said strips as theyare fed tothe v.

mandrel. A

In testimon whereof I affix my signature Wit esses:

TANLEY C. FALmN, RILEY G. CAs'rLEMAN, 

